Development of DETAC and its application to the hydrogen detonation analysis |
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| Affiliation: | 1. Department of Nuclear Science and Technology, Xi''an Jiaotong University, Xi''an City 710049, China;2. Key Laboratory Advanced Reactor Engineering and Safety, Ministry of Education of China, China;1. Fundamental Science on Nuclear Safety and Simulation Technology Laboratory, Harbin Engineering University, Harbin, Heilongjiang, 150001, China;2. CNNC Key Laboratory on Nuclear Reactor Thermal Hydraulics Technology, Nuclear Power Institute of China, Chengdu, 610041, China;3. School of Energy and Power Engineering, Northeast Dianli University, Jilin, 132012, China;4. State Key Laboratory of Hydraulics and Mountain River Engineering, College of Water Resource & Hydropower, Sichuan University, Chengdu, 610065, China;1. Centre de recherche nucléaire de birine, BP 180, Djelfa 17200, Algeria;2. Facoltà di Ingegneria, Università di Pisa, Via Diotisalvi, 2, Pisa, Italy;3. University of El-Oued, 39000, Algeria;4. Université Ferhat Abbas de Setif, Algeria;1. Institute of Nuclear and New Energy Technology, Tsinghua University, Beijing 100084, China;2. Collaborative Innovation Center of Advanced Nuclear Energy Technology, Beijing 100084, China;3. The Key Laboratory of Advanced Reactor Engineering and Safety, Ministry of Education, Beijing, 100084, China;1. Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800, China;2. CAS Center for Excellence in TMSR Energy System, Chinese Academy of Sciences, Shanghai 201800, China;3. University of Chinese Academy of Sciences, Beijing 100049, China |
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| Abstract: | In this study, a numerical analysis code (DETAC, Detonation Analysis Code) for hydrogen detonation during the reactor severe accident was developed using Fortran 90 language, and the simulation was performed for the hydrogen detonation. A global-chemistry model was adopted to simulate the chemical reaction. The Euler equations were solved using third-order Runge-Kutta method with fifth-order weighted essentially non-oscillatory scheme handling the convection flux. Afterward, the hydrodynamics solver was verified by comparison of predicted results and exact solutions of four cases of shock tube problems. A hydrogen detonation in a pipe was simulated to verify this code by comparing the results with the classical C-J theory. Furthermore, this code was applied to the hydrogen detonation analysis in the compartment of BWR building. Two cases with different ignition locations were analyzed in this paper and the maximum pressure of these cases were 7.5 MPa and 8.0 MPa, respectively. The pressure and the temperature during detonation were affected by the ignition location. The results indicated that the possibility of reactor building destruction exists if the hydrogen detonation occurs. |
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| Keywords: | Hydrogen detonation Nuclear reactor building Severe accident Numerical simulation |
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